Control Measures for Hazardous Agents
Elimination, substitution, enclosure, local exhaust ventilation, work methods, hygiene, RPE, maintenance and verification.
How to prepare for CN1
Learn the principle, locate scenario evidence, explain why it matters, choose proportionate controls and show how actions will be prioritised and reviewed.
Core concepts
Concept 1
Elimination, substitution, enclosure, local exhaust ventilation, work methods, hygiene, RPE, maintenance and verification.
Exam cue: Name the specific construction evidence before applying the principle or control.
Concept 2
Control at source before relying on RPE, then verify that engineering controls achieve and maintain the required performance.
Exam cue: Prefer prevention and collective protection before procedural or personal controls.
Concept 3
RPE requires suitable selection, face fit where applicable, compatibility, maintenance, storage and correct use.
Risk pitfalls and guardrails
Giving a generic hazard or control list without connecting it to people, task and site conditions.
Guardrail: Do not give a generic control list without linking it to the task, people, site conditions and verification method.
Treating a document, inspection or item of PPE as proof that the underlying risk is controlled.
Guardrail: Do not give a generic control list without linking it to the task, people, site conditions and verification method.
Memory anchors
CN1 12.3 · Control Measures for Hazardous Agents
Elimination, substitution, enclosure, local exhaust ventilation, work methods, hygiene, RPE, maintenance and verification.
Control Measures for Hazardous Agents · decision cue
Control at source before relying on RPE, then verify that engineering controls achieve and maintain the required performance.
Control Measures for Hazardous Agents · evidence check
RPE requires suitable selection, face fit where applicable, compatibility, maintenance, storage and correct use.
Checkpoint rule
Do the check-up only after you can summarize each concept in one sentence and identify one dangerous pitfall from memory.
Knowledge Check (after reading)
Short check-up to confirm understanding of this module.
Check-up Questions
Next step personalized recommendations
Continue learning
Move forward only after this module is stable.
What is Pass Harbor?
Completely free exam prep for 247 UK exams.
- Practice questions
- Flashcards
- Study guides
- Mock exams
- No registration
- No paywall
- Start instantly
“No more expensive exam prep. Quality study tools should be accessible to everyone.”